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Wyświetlanie 1-15 z 33
Tytuł:
Activities related to HIROMB and local model development in Finland
Autorzy:
Gästgifvars, M.
Powiązania:
https://bibliotekanauki.pl/articles/1920598.pdf
Data publikacji:
2000
Wydawca:
Instytut Morski w Gdańsku
Tematy:
development
coastal area
Opis:
Coastal area fine resolution models have been developed to enhance the operational and ecosystem modelling in the Gulf of Finland. A user inteiface has been developed for both the transport and ecosystem models which both utilise 3D precalculated flow fields. Also a user inteiface development for the chemical module has been ongoing in the year 2001. A two year project plan indicates the future activities related to the operational Helsinki-Espoo model development. The project includes development of system software, improvement of data communication links and troining workshops. A permanent flow measurement device and a new meteorological station, will be established to the Helsinki lighthouse and drift experiments arranged so that model validation can be continued.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 97-99
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Activities related to HIROMB and local model development in Finland
Autorzy:
Gästgifvars, M.
Powiązania:
https://bibliotekanauki.pl/articles/972863.pdf
Data publikacji:
2001
Wydawca:
Instytut Morski w Gdańsku
Tematy:
development
coastal area
Opis:
Coastal area fine resolution models have been developed to enhance the operational and ecosystem modelling in the Gulf of Finland. A user inteiface has been developed for both the transport and ecosystem models which both utilise 3D precalculated flow fields. Also a user inteiface development for the chemical module has been ongoing in the year 2001. A two year project plan indicates the future activities related to the operational Helsinki-Espoo model development. The project includes development of system software, improvement of data communication links and troining workshops. A permanent flow measurement device and a new meteorological station, will be established to the Helsinki lighthouse and drift experiments arranged so that model validation can be continued.
Źródło:
Biuletyn Instytutu Morskiego w Gdańsku; 2001, 28, 2; 97-99
1230-7424
2450-5536
Pojawia się w:
Biuletyn Instytutu Morskiego w Gdańsku
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New challenges for North Sea research - 20 years after FLEX76 (Summary, results and conclusions of the International Symposium)
Autorzy:
Sundermann, J.
Powiązania:
https://bibliotekanauki.pl/articles/48358.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
research programme
symposium
North Sea
coastal area
Opis:
The present state of North Sea research was assessed and examined at an International Symposium in Hamburg. Specific attention was devoted to the issues of external forcing, internal dynamics, and new methods and experiments. In the concluding discussion Grand Challenges for North Sea research were formulated.
Źródło:
Oceanologia; 2000, 42, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Artificial Neural Network into the Water Level Modeling and Forecast
Autorzy:
Sztobryn, M.
Powiązania:
https://bibliotekanauki.pl/articles/116204.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
artificial neural network (ANN)
hydrography
coastal area
Opis:
The dangerous sea and river water level increase does not only destroy the human lives, but also generate the severe flooding in coastal areas. The rapidly changes in the direction and velocity of wind and associated with them sea level changes could be the severe threat for navigation, especially on the fairways of small fishery harbors located in the river mouth. There is the area of activity of two external forcing: storm surges and flood wave. The aim of the work was the description of an application of Artificial Neural Network (ANN) methodology into the water level forecast in the case study field in Swibno harbor located is located at 938.7 km of the Wisla River and at a distance of about 3 km up the mouth (Gulf of Gdansk ‐ Baltic Sea).
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 2; 219-223
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary results of lidar based studies of the aerosol vertical distribution in the lower troposphere over urban coastal areas
Autorzy:
Halas, M.
Blaszczak, Z.
Grabowski, J.
Papayannis, A.
Zielinski, T.
Powiązania:
https://bibliotekanauki.pl/articles/48171.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
vertical profile
aerosol
urban area
lidar
troposphere
coastal area
Opis:
The paper reports the results of lidar measurements performed in the lower troposphere during several measurement sessions in Athens (Greece) in 2000. For the sake of comparison, results of a similar study performed in Kołobrzeg (Poland) in 2001 are also given. These data indicate that the exhaust gases produced by motor transportation in the cities resulted in the formation of an inversion layer. The rate of convection of the inversion layer depends on the intensity of sunlight, the strength of winds and the morphology of the land. The inversion layer reaches the highest altitudes in the middle of summer, lower in early and late summer and the lowest in autumn. Over the sea the inversion layer altitude extends to several meters, but on moving inland it rises to a fewh undred meters.
Źródło:
Oceanologia; 2004, 46, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water-Borne Diseases and Their Challenges in the Coastal of Ampara District in Sri Lanka
Autorzy:
Ameer, M. L. Fowsul
Powiązania:
https://bibliotekanauki.pl/articles/1118154.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
coastal area
consumption
contamination
pathogens
water-borne diseases
Opis:
Water satisfies human needs in many ways. Without water, life is not possible in this planet. According to the estimation of the WHO, 4,000 children die every day from water-borne diseases and this condition is worst in developing and under-developed countries. Water-borne diseases are caused by the consumption of contaminated water. Indeed, it is the main agent of transference of the pathogens causing these diseases. The main objective of this paper is ‘to identify the water-borne diseases and their challenges and to suggest remedial measures to overcome the challenges in the study area’. Both primary and secondary data were used to conduct this study and the analysis of this study is tabulated clearly in the data analysis part. The coastal areas of Ampara District (Sainthamaruthu, Karaitivu, Maligaikadu Mawadipalli, Akkaraipattu, Irakkamam, Varipathanchenai, Addalaichenai, Palamunai, Oluvil and Nintavur) face a lot of challenges induced by water-borne diseases. Viruses, bacteria, parasites and protozoa are the main pathogens. Bacillary dysentery (shigellosis), cholera, other diarrheal diseases, hepatitis A and E and typhoid fever were identified as the most common diseases in these areas. The causes for the diseases are the contamination of water by improper drainage management, effluent contamination of water sources, over population and the lack of awareness among residents about water-borne diseases. According to the result of this study, controlling water contamination, constructing water purification systems, mending existing drainage systems, following instructions when constructing latrines, examining and remediating contaminated wells and providing awareness among residents are ways to attain the objectives.
Źródło:
World News of Natural Sciences; 2017, 9; 7-18
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chromium Accumulation by Avicennia alba Growing at Ecotourism Mangrove Forest in Surabaya, Indonesia
Autorzy:
Titah, Harmin Sulistiyaning
Pratikno, dan Herman
Powiązania:
https://bibliotekanauki.pl/articles/124450.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Avicennia alba
BCF
coastal area
chromium
mangrove forest
root
sediment
Opis:
The Ecotourism Mangrove Forest at Wonorejo in East Coast Surabaya area is one of large mangrove forests inside in the metropolitan city in Indonesia. There are many ecological values of the mangrove forest in most tropical countries such as sea fisheries, place of sea and coastal animals, sea and brackish water quality protecting the endangered mangrove coastlines and development of human life. The role of mangrove in increasing the sea and brackish water quality can be shown through many processes such as cycling of nutrients, particulate matter and some pollutants in water and sediment around the mangrove plants. One of the inorganic pollutants that can be removed by mangrove are heavy metals, such as chromium (Cr). The Wonorejo River is one of the rivers that receive the disposal of wastewater in Surabaya East Coast area. Large quantitites of wastewater from industries and households were released to this river. The concentration of Cr at the Wonorejo Estuary reached 0.0325 mg/L and 2.7761 mg/L in sediments. The purpose of this research was to determine the potency of Cr accumulation by Avicennia alba that was grown for ten years at Wonorejo Ecotourism Mangrove Forest. The sampling activities were conducted using a transect quadrat sampling method with a 10x10 m dimension. The sediment and mangrove root samples were extracted before being analysed using an atomic absorption spectrophotometer (AAS). The results showed that the Cr accumulation by roots of A. alba reached 25.4 ± 1.6 to 55.3 ± 1.1. The BCF value in A. alba were 0.32 ± 0.01 to 0.83 ± 0.5 with the concentration Cr in sediment were 60 ± 1.4 to 79.3 ± 1.1. A. alba showed potential as a moderate accumulator for Cr. In conclusion, A. alba can be considered for use in phyto-monitoring and phytoremediation of Cr in coastal areas.
Źródło:
Journal of Ecological Engineering; 2020, 21, 2; 222-227
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Upwelling session in Indonesia waters
Autorzy:
Purba, Noir P.
Khan, Alexander M. A.
Powiązania:
https://bibliotekanauki.pl/articles/1076677.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
coastal area
economic exclusive zone
periodic monsoon
satellite data
upwelling
Opis:
The aim of this research was to analyze monthly sea surface temperature (SST) and chlor-a satellite data for 16 years from 2003 in an area from south Java to north Papua. The results show that the temporal and spatial pattern of SST and chlor-a distribution strongly was related to the monsoonal pattern. The upwelling session starts from May and ends in the October, in the south-east monsoon season. The lowest SST (25-30 °C) and the highest chlor-a (2.23 mg/l) is found in August in the south-east monsoon season. In addition, the largest upwelling area occurs in July, and ranges within 790,221 km2 of size.
Źródło:
World News of Natural Sciences; 2019, 25; 72-83
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental study of hydraulic response of smooth submerged breakwaters to irregular waves
Autorzy:
Mahmoudof, S.M.
Hajivalie, F.
Powiązania:
https://bibliotekanauki.pl/articles/2078821.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
submerged breakwater
irregular wave
experimental study
transmission
reflection
coastal area
Opis:
This paper presents the results of a laboratory experiment on transmission, reflection, and dissipation of irregular waves over smooth impermeable submerged breakwaters. Experiments included 75 JONSWAP-based irregular waves with five different wave characteristics generated at three water depths in a 2D wave flume. The investigated breakwater sections were three rectangular breakwaters with different widths, a toothed rectangular breakwater, and a trapezoidal breakwater with a slope of 1:2. A new comprehensive dimensionless parameter (β) was proposed representing both wave hydrodynamic and breakwater geometry characteristics. This parameter could be employed as a suitable descriptive option to make an accurate estimate of the hydraulic performances of submerged breakwaters. The β parameter is composed of four conventional simple dimensionless variables. However, the results revealed that the relative submergence depth significantly affects the hydraulic responses of submerged breakwaters. The transmission, reflection and dissipation of waves show a logarithmic growth, a logarithmic reduction, and a quadratic decreasing trend against the increasing of β parameter, respectively. The verifications of results revealed the high efficiency of β parameter for data reported by Carevic et al. (2013) with R2 = 0.88 and high agreement with predictions made by Van der Meer et al. (2005) formulation with R2 = 0.93.
Źródło:
Oceanologia; 2021, 63, 4; 448-462
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An integrated wave modelling framework for extreme and rare events for climate change in coastal areas – the case of Rethymno, Crete
Autorzy:
Tsoukala, V.K.
Chondros, M.
Kapelonis, Z.G.
Martzikos, N.
Lykou, A.
Belibassakis, K.
Makropoulos, C.
Powiązania:
https://bibliotekanauki.pl/articles/48719.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
coastal area
climate change
Crete
flooding
wave
storm
modelling
numerical model
Źródło:
Oceanologia; 2016, 58, 2
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variability of coastal water hydrodynamics in the Southern Baltic - hindcast modelling of an upwelling event along the Polish coast
Autorzy:
Jankowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/49140.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
variability
temperature
coastal water
hydrodynamics
numerical modelling
Baltic Sea
surface layer
hydrological condition
coastal area
Opis:
This paper presents the results of an attempt to reproduce, with the aid of a numerical circulation model, the hydrological conditions observed in the coastal area of the southern Baltic in September 1989. A large fall in surface layer seawater temperature was recorded in September 1989 at two coastal stations in the vicinity of Kołobrzeg and Władysławowo. This upwelling-like phenomenon was assumed to be related to the specific anemobaric situation in September 1989, however typical of this phenomenon to occur along the Polish Baltic coast (Malicki & Miętus 1994). A three-dimensional (3-D) σ-coordinate baroclinic model of the Baltic Sea, with a horizontal resolution of ∼5 km and 24 sigma-levels in the vertical, was applied to investigate water circulation and thermohaline variability. Hindcast numerical simulation showed that the model provided a good reproduction of the temporal history of the surface seawater temperature and the duration of the upwelling-like fall, but that the model results were underestimated. The maxima of this large fall in the surface layer temperature at both coastal stations are closely related to the phase of change of the upwelling-favourable wind direction to the opposite one. The results of simulation runs showed details of upwelling development due to wind field fluctuations in time and differences in shaping the temperature and current patterns in conjunction with the variations in topography and coastline features in some areas along the Polish coast. Two different hydrodynamic regimes of water movements along the coast resulting from topographical features (the Słupsk Bank) can be distinguished. From the model simulation the specific conditions for the occurrence and development of upwelling at the eastern end of the Polish coast (in the vicinity of Władysławowo) can be deduced.
Źródło:
Oceanologia; 2002, 44, 4
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy metals contamination and distribution of benthic foraminifera from the Red Sea coastal area, Jeddah, Saudi Arabia
Autorzy:
Youssef, M.
Powiązania:
https://bibliotekanauki.pl/articles/48421.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
benthic foraminifera
heavy metal
contamination
distribution
Red Sea
coastal area
Saudi Arabia
Źródło:
Oceanologia; 2015, 57, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using geoelectric soundings for estimation of hydraulic characteristics of aquifers in the coastal area of Lagos, southwestern Nigeria
Autorzy:
Fatoba, J.O.
Omolayo, S.D.
Adigun, E.O.
Powiązania:
https://bibliotekanauki.pl/articles/11667.pdf
Data publikacji:
2014
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
geoelectrical parameter
estimation
hydraulic characteristics
hydraulic parameter
aquifer
coastal area
Lagos
Nigeria
Opis:
Electrical resistivity investigation was carried out at Ibeju Lekki, Southwestern Nigeria. The thrust of this study is to determine the geoelectrical parameters of the shallow aquifer and estimate the hydraulic characteristics of this aquifer unit from the surface geophysics. The area falls within the Dahomey basin of the Nigeria sedimentary terrain. Twenty-one VES were conducted using Shlumberger array with a maximum half current electrode (AB/2) of 100 m giving total spread of 200 m. Data were interpreted using partial curve matching technique and assisted 1-D forward modeling with WINRESIST software. The qualitative interpretation revealed KQ curves (ρ1 < ρ2 > ρ3 > ρ4) and KH curve (ρ1 < ρ2 > ρ3 < ρ4). The geoelectric section generated from the results of the VES revealed a four geo-electric layers; these include topsoil with resistivity ranging from 213-5404 Ωm, dry sand with resistivity values vary from 301to 17178 Ωm, saturated sand with resistivity varying from 110 to1724 Ωm and sand (saline water content) with resistivity values of between 8 and 97 Ωm. The major aquifer in the area occurs at the third geoelectric layer. The depth to this aquifer is of between 0.7m and 6.0m and the layer thickness is between 0.2 m and 19.9 m. The hydraulic characteristics of the aquifer estimated from the geoelectric parameters reveal that the aquifer has porosity values of between 29.4 % and 57.7 %, protective capacities of between 0.00013 and 0.015 mhos, transverse resistance ranges from 345-18502 Ωm2, transmissivity values vary from 13 to 310 m2/day and hydraulic conductivity ranges from 0.8-65 m/day. The results show that the aquifer is characterized by high porosity and low protective capacities of overburden layers indicating that it is highly vulnerable to surface contamination. It has high transverse resistance, high transmissivity, and high hydraulic conductivity indicating that the aquifer can transmit water at higher rate and sustain the need of the community. This study has demonstrated the efficacy of surface geophysics in estimating hydraulic characteristics of an aquifer where pumping test data are not available and also to determine its vulnerability to surface contaminants.
Źródło:
International Letters of Natural Sciences; 2014, 06
2300-9675
Pojawia się w:
International Letters of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationships between the dynamics of two Talitrus saltator populations and the impacts of activities linked to tourism
Autorzy:
Fanini, L.
Cantarino, C.M.
Scapini, F.
Powiązania:
https://bibliotekanauki.pl/articles/47474.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
tourism
natural park
beach management
Italy
Tuscany
seasonality
population
Talitrus saltator
coastal area
Opis:
The study considered two ecologically similar coastal areas in Tuscany (Italy). One site belongs to a protected natural area and the other one is in front of a camping site. We analysed the impact of human activities, such as trampling and mechanical beach cleaning, on Talitrus saltator. It turned out that the population density was affected in that it first disappeared from the area at the camping site, then recolonised it once the peak of the tourist season at the camping site had passed. The results confirm the sensitivity of this species and its plasticity in adapting to different conditions on the one hand, and the positive effects of diversification in resource management on the other hand.
Źródło:
Oceanologia; 2005, 47, 1
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Climate of long internal waves and resuspension on the coastal shelf
Autorzy:
Bogucki, D.J.
Redekopp, L.G.
Powiązania:
https://bibliotekanauki.pl/articles/47452.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
boundary layer
internal wave
turbulence
resuspension
long internal wave
internal solitary wave
coastal shelf
instability
climate
coastal area
Opis:
Observations of the shelf environment rarely associate internal solitary waves (ISWs) with the impact of their passage. An experiment observed during the Coastal Mixing and Optics 1996( CMO ’96), a sequence of long internal waves on a coastal shelf is reported, including both mode-1 and mode-2 waves, together with evidence related to the interaction of propagating ISWs and the benthic boundary layer. The observed ISW dynamics is shown to present a repetitive pattern or ‘climate cycle’. The ISW-associated benthic signature described here occurs frequently (at least once a day) in the CMO ’96coastal area and suggests that ISWs under calm, summer-like conditions may have a decisive influence on the fate of near-bottom pollutants or biological processes in shelf regions.
Źródło:
Oceanologia; 2008, 50, 1; 5-21
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 33

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